Table Of ContentRevue Suisse deZoologie 105 (1): 125-138; mars 1998
Supplement to the knowledge ofthe Agathidiini ofTaiwan
(Coleoptera, Leiodidae)
Fernando ANGELINI* & Luigi DE MARZO**
* S.S.7 perLatiano, Km. 0.500, 1-72021 FrancavillaFontana (Brindisi), Italy
** Dipartimento di Biologia, Difesae Biotecnologie agro-forestali,
Universitàdella Basilicata, ViaNazario Sauro 85, 1-85100 Potenza, Italy
Supplement to the knowledge of the Agathidiini of Taiwan (Coleop-
tera, Leiodidae). - New records and/or descriptions are given for 32
species ofAgathidiini from Taiwan, collected by Dr. Ales Smetana.
New species are: Agathidium (A.) subnitidum n.sp., Agathidium (A.) deli-
catulum n.sp., Agathidium (A.) alesi n.sp., Agathidium (A.) pictum n.sp.
New records for Taiwan are: Cyrtoplastus seriepunctatus (Bris.), Agathi-
dium (Neoceble) kyotoense Ang. & Dmz, A. (Neoceble) confusimi Bris., A.
(A.) mequignoni Roubal.
Spermatheca is figured for the first time of: Agathidium (A.) honestum
& & &
Ang. Dmz., A. (A.) meifengense Ang. Dmz., A. (A.) egregium Ang.
Dmz.
Key-words: Leiodidae - Agathidiini - Taiwan - new species - new records.
INTRODUCTION
This new contribution increases the number of the species of Agathidiini
known from Taiwan to 60. It is based on the study of 32 species in 430 specimens of
Cyrtoplastus and Agathidium, collected in 18 localities by Dr. Ales Smetana, and
includes:
(a) the descriptions of 4 new species: Agathidium (A.) subnitidum n.sp., Aga-
thidium (A.) delicatulum n.sp., Agathidium (A.) alesi n.sp., Agathidium (A.) pictum
n.sp.;
(b) 4 new records for Taiwan: Cyrtoplastus seriepunctatus (Bris.), Agathidium
(Neoceble) kyotoense Ang. & Dmz, A. (Neoceble) confusum Bris.,A. (A.) mequignoni
Roubal;
(c) some female characters of 3 species known previously only from male
specimens.
The specimens are deposited in Geneva Museum (MHNG), Taichung Museum
(NMNT) and F. Angelini's private collection (AC).
Manuscriptaccepted 11.07.1997
126 FERNANDOANGELINI & LUIGIDEMARZO
We are indebted to Dr. Ales Smetana (Ottawa) for the opportunity ofstudying
his very interesting material and to Dr. Ivan Lobi for comments on the manuscript of
this paper.
Cyrtoplastus Reitter. 1884
Cyrtoplastus smetanai Ang. & Dmz.
CyrtoplastussmetanaiAngelini & De Marzo. 1995: 184.
Material: Taiwan, Taichung Hsien, Anmashan. 2230 m. 12.V.92, 1 6 and 3 9
(MHNG. NMNT. AC).
Discussion: These specimens agree in all characters with the types. Body length: 2.3-
2.5 mm.
Distribution: Taiwan.
Cyrtoplastus seriepunctatus (Brisout)
AgathidiumseriepunctatusBrisoutinGrenier, 1867: 174.
Cyrtoplastus seriepunctatus. Ganglbauer 1899: 239: Angelini & De Marzo 1988: 65;
HosHiNA 1996: 204.
Material: Taiwan. Kaohsiung Hsien, Peinantashantrail, 2500m.4.VII.93. 1 ex. (AC).
Discussion: This specimen differs from the European material in the shape of the
aedeagal apex5 in dorsal view.
Distribution: Europe. Siberia. Mongolia, Japan, Taiwan. New record forTaiwan.
Agathidium Panzer, 1797
Subg. Cyphoceble Thomson. 1859
Agathidium (Cyphoceble) yushanicum Ang. & Dmz.
Agathidium (Cyphoceble)yushanicum Angelini & DeMarzo. 1995: 186.
Material: Taiwan, Nantou Hsien, Nenkaoshan, 1.5 Km SW Tenchi Hut. 2830 m,
6.V.92, 2 exx. (MHNG. AC).
Distribution: Taiwan.
Agathidium (Cyphoceble) geniculatum Ang. & Dmz.
Agathidium (Cyphoceble)geniculatum Angelini & De Marzo. 1995: 191.
Material: Taiwan. Kaohsiung Hsien. Kuanshan. trail above Kaunshanchi Riv.. 2550
m. 21.IV.92. 1 S and 1 9 (AC); Taichung Hsien. Anmashan. 2225 m. 11.V.92. 1 9 (NMNT);
Taichung Hsien, Anmashan, 2230 m, 12.V.92, 1 S and 1 9 (MHNG); Kaohsiung Hsien.
Kuanshan.trail atKaunshanchiRiv.. 2400m. 20.VII.93, 1 Ó* (MHNG).
Distribution: Taiwan.
Subg. Neoceble Gozis. 1886
nigripenne group
Agathidium (Neoceble) kyotoense Ang. & Dmz.
Agathidium (Neoceble)kyotoenseAngelini &DeMarzo. 1988: 79: Angelini 1995: 136.
SUPPLEMENTOFTHEAGATHIDIINI OFTAIWAN 127
Material: Taiwan, Kaohsiung Hsien, Peinantashan trail, 2500 m, 4.VII.93, 1 6 (AC);
Kaohsiung Hsien, Peinantashan trail, 2390-2490 m, 5.VII.93, 1 6 (MHNG); Nantou Hsien,
Meifeng, 2130m, 10.VII.93. 1 9 (NMNT).
Discussion: These specimens agree with the types from Japan in all characters, except
one which has the dorsum black.
Distribution: Japan (Honshu), Taiwan. New record forTaiwan.
Agathidium (Neoceble) nigrocastaneum Ang. & Dmz.
Agathidium (Neoceble)nigrocastaneum Angelini & DeMarzo, 1995: 192.
Material: Taiwan, Taichung Hsien, Anmashan, 2230 m, 12.V.92, 1 6 and 2 9
(MHNG); Taichung Hsien, Anmashan. 2120 m. 13.V.92, 1 Ô and 1 2 (AC); Taichung Hsien,
Anmashan, 2225 m, 14.V.92, 1 ex. (NMNT).
Discussion: These specimens agree fully with the types. Body length: 2.5-2.7 mm.
Distribution: Taiwan.
Agathidium (Neoceble) confusimi Brisout
Agathidium (Neoceble) confusum Brisout in Grenier 1863: 9; Hlisnikovsky 1964: 90;
Angelini 1995: 179.
Material: Taiwan, Kaohsiung Hsien, Peinantashan trail, 2390-2490 m, 5.VII.93, 1 9
(MHNG); KaohsiungHsien, Peinantashantrail, 1950m, 8.VII.93, 1 ? (AC).
Discussion: These specimens agree in all characters with European material.
Distribution: Europe, Caucasus, Siberia, Mongolia, Japan, Taiwan. New record for
Taiwan.
canariense group
Agathidium (Neoceble) rufomarginatum Ang. & Dmz.
Agathidium (Neoceble) rufomarginatum Angelini & DeMarzo, 1995: 197.
Material: Taiwan, Pingtung Hsien, Peitawhushan, trail at 1500m, 1.V.92, 5 6 (MHNG.
NMNT); Taichung Hsien, Anmashan, 2225 m, 11.V.92, 1 6 (MHNG); Taichung Hsien.
Anmashan, creek. 2185 m, 12.V.92, 1 9 (MHNG); Taichung Hsien, Anmashan, 2120 m,
13.V.92, 1 6 (MHNG);NantouHsien,Meifeng, 2130m, 10.VII.93, 2 S and2 9 (MHNG, AC).
Discussion: Agathidium rufomarginatum Ang. & Dmz. was described on the basis of
1 male and 1 female. The additional specimens agree with the types in all characters.
Body length: 2.1-2.5 mm.
Distribution: Taiwan.
Subg. Macroceble Angelini, 1992
Agathidium (Macroceble) oblitum Ang. & Dmz.
Agathidium (Macroceble)oblitum Angelini & DeMarzo, 1995: 198.
Material: Taiwan,TaichungHsien, Anmashan, 2225 m, 11.V.92, 2 9 (MHNG, AC).
Distribution: Taiwan.
Subg. Agathidium Panzer, 1797
madurense group
128 FERNANDO ANGELINI & LUIGI DEMARZO
FlGS 1-4
Male metafemora of: 1,Agathidium subnitidum li.sp.; 2, A. delicatulum n.sp.; 3,A. alesi n.sp.;
4, A.pictumn.sp.
Agathidium (Agathidium) subnitidum n.sp. Figs 1,5-7, 17
Length 3.3-3.5 mm (holotype â: 3.4 mm). Dorsum either black or dark
reddish-brown; venter reddish-brown; antennae uniformly testaceous; legs reddish-
brown. Microreticulation almost absent: traceable on pronotum and elytra; punc-
turation fine and sparse on entire dorsum. Suturai striae absent.
Head: Widest at eyes; anterior-lateral margins distinctly raised; clypeus deeply
emarginate; clypeal line absent; eyes flattened. Antennal segment 3 1.8 times as long
as 2 and as long as 4 and 5 combined. Hamann's organ: gutter without vesicles in 9th
and 10th antennal segments. Microreticulation absent; punctures very small, super-
ficial, hardly distinct, separated from each otherby 1-10 times theirdiameter.
Pronotum: 1.3 times as broad as head, slightly broader than long (W/L = 1.33)
and very convex (W/H = 1.31); anteriormargin sharply curved; lateral outline broadly
rounded. Microreticulation almost absent: only traceable; punctures as large as those
on head but sparser, separated from each other by 2-15 times their diameter.
Holotype: length 1.20 mm, width 1.60 mm, height 1.22 mm.
Elytra: Slightly narrower than pronotum, as broad as long and moderately
convex (W/H = 1.8); lateral outline with very weak humeral angle. Microreticulation
almost absent, only traceable; punctures as large as those on head, separated from
each other by 5-15 times their diameter. Holotype: length 1.45 mm, width 1.50 mm,
height0.83 mm.
Metathoracic wings absent. Meso- and metasternum: median carina absent,
lateral lines absent, femoral lines complete.
Legs: Male metafemora enlarged distally (fig. 1). Tarsal formula: S 5-5-4, 9
5-4-4.
Male copulatory organ (figs 5-7): Aedeagus stout, with ring-like proximal part,
lateral margins gently convergent towards a rounded apex, ventral piece shallowly
emarginate. Parameres sinuate, broadened apically.
SUPPLEMENTOFTHEAGATH1DIINI OFTAIWAN 129
Figs5-10
Male copulatory organ (lateral view, dorsal and ventral view of apex) of: 5-7. Agathidium
subnitidum n.sp.; 8-10,A. delicatulumn.sp. Scale: 1 division=0.1 mm.
30 FERNANDOANGELINI &LUIGIDEMARZO
1
Spermatheca (fig. 17): Basal and ventral parts slender, differing in length.
Holotype 8: Taiwan, Pingtung Hsien, Peitawhushan, Kuai-Ku Hut, 2135 m, 30.IV.92
(MHNG).
Paratypes: asholotype, 1 9 (MHNG), 1 8 (NMNT), 1 8 and 1 9 (AC).
Discussion: Agathidium subnitidum n.sp. is closely related to Agathidium tardum
Ang. & Dmz.; it differs from the latter in the darker colour ofthe dorsum, the colour
ofthe antenna, the ratio ofthe pronotum/head width, the absence of the metathoracic
wings andthe characters ofthe meso- and metasternum.
Distribution: Taiwan.
Agathidium (Agathidium) delicatulum n.sp. Figs 2, 8-10, 18
Length 2.9-3.8 mm (holotype 6: 3.1 mm). Dorsum either black or dark
reddish-brown; venter dark reddish-brown, mesosternum testaceous; antennae uni-
formly testaceous; legs reddish-brown. Microreticulation absent from dorsum; punc-
turation fine and sparse on entire dorsum. Suturai striae absent.
Head: Widest at eyes; anterior-lateral margins distinctly raised; clypeus
moderately emarginate; clypeal line absent; eyes flattened. Antennal segment 3 1.5
times as long as 2 and longer than 4 and 5 combined. Hamann's organ: gutter without
vesicles in 9th and 10th antennal segments. Punctures very small, superficial, hardly
distinct, separated from each otherby 1-10 times theirdiameter.
Pronotum: 1.3 times as broad as head, slightly broader than long (W/L = 1.31)
and very convex (W/H = 1.45); anteriormargin sharply curved; lateral outline broadly
rounded. Punctures as large as those on head. Holotype: length 1.10 mm, width 1.45
mm, height 1.00 mm.
Elytra: Moderately narrower than pronotum, as broad as long and moderately
convex (W/H = 1.8); lateral outline with very weak humeral angle. Punctures as large
as those on head. Holotype: length 1.40 mm, width 1.35 mm, height 0.75 mm.
Metathoracic wings absent. Meso- and metasternum: median carina sharp,
lateral lines absent, femoral lines complete.
Legs: Male metafemora enlarged distally (fig. 2). Tarsal formula: 8 5-5-4, 9
5-4-4.
Male copulatory organ (figs 8-10): Aedeagus slender, with ring-like proximal
part, lateral margins sinuously convergent towards a subacute apex, ventral piece
deeply emarginate. Parameres slender, gently narrowing towards apex.
Spermatheca (fig. 18): Basal part pear-shaped; apical part short.
Holotype 8: Taiwan, Kaohsiuns Hsien, Peinantashan trail, 2500 m, 4.VII.93
(MHNG).
Paratypes: asholotype, 1 8 and 1 9 (MHNG), 1 8 and 1 9 (AC); samebut2390-2490
m. 5.VII.93, 1 8 and3 9(MHNG), 1 8 and 1 9 (NMNT), 1 8 and 1 9 (AC); KaohsiungHsien,
Kuanshan. trailabove Kaunshanchi Riv., 2550m, 22.VII.93, 1 8 and3 9 (MHNG).
Discussion: Agathidium delicatulum n.sp. is closely related to Agathidium alesi n.sp.
and A. distinguendum Ang. & Dmz.; it differs from them in the shape of the male
metafemora and ratio ofthe 3rd/2nd antennal segments. The three species can be dis-
tinguishedby the male copulatory organ.
Distribution: Taiwan.
SUPPLEMENTOFTHEAGATHIDIINIOFTAIWAN 13\
Agathidium (Agathidium) alesi n.sp. Figs 3, 11-13, 19
Length 3.0-4.1 mm (holotype â: 4.1 mm). Dorsum black, mesosternum red-
dish-brown, metasternum darker; antennae uniformly testaceous; legs reddish-brown.
Microreticulation absent from dorsum; punctures small and sparse on entire dorsum.
Suturai striae absent.
Head: Widest at eyes; anterior-lateral margins distinctly raised; clypeus deeply
emarginate; clypeal line absent; eyes flattened. Antennal segment 3 1.3 times as long
as 2 and longer than segments 4 and 5 combined. Hamann's organ: gutter without
vesicles in 9th and 10th antennal segments. Punctures very small and superficial,
separated from each otherby 2-10 times theirdiameter.
Pronotum: 1.4 times as broad as head, slightly broader than long (W/L = 1.25)
and very convex (W/H = 1.45); anterior margin sharply curved; lateral outline broadly
rounded. Punctures as large as those on head. Holotype: length 1.40 mm, width 1.75
mm, height 1.20 mm.
Elytra: Moderately narrower than pronotum, slightly longer than broad (W/L =
0.8) and moderately convex (W/H = 1.68); lateral outline with very weak humeral
angle. Punctures very small, hardly distinct, separated from each other by 2-15 times
theirdiameter. Holotype: length 2.00 mm, width 1.60 mm, height 0.95 mm.
Metathoracic wings absent. Meso- and metasternum: median carina sharp,
lateral lines absent, femoral lines incomplete; a small tubercle between the metacoxae.
Legs: Male metafemora with a pronounced tooth at the posterior margin (fig.
3). Tarsal formula: S 5-5-4, 9 5-4-4.
Male copulatory organ (figs 11-13): Aedeagus very slender, with a hook-like
proximal part, lateral margins sinuously converging to rounded apex, ventral piece
shallowly emarginate. Parameres slender, abruptly reflexed nearapex.
Spermatheca (fig. 19): Basal and ventral parts slender, differing in length.
Holotype 6: KaohsiungHsien, Peinantashan trail, 2390-2490m, 5.VII.93 (MHNG).
Paratypes: as holotype, 5 ? (MHNG). 1 3 and 1 9 (NMNT), 3 6 and 2 9 (AC);
same but 2500 m, 4.VII.93, 4 6 (MHNG); Nantou Hsien, Nenkaoshan Tenchi Hut, 2895 m,
7.V.92, 1 S (MHNG).
Discussion: See under A. delicatulum n.sp. Agathidium alesi n.sp. is most closely
related to A. distinguendum Ang. & Dmz.; it differs in the pronotai shape and the
aedeagal apex.
Distribution: Taiwan.
Agathidium (Agathidium) ? distinguendum Ang. & Dmz.
Agathidium(s.str.)distinguendumAngelini & De Marzo, 1995: 202.
Material: Taiwan, Pingtuna Hsien, Peitawhushan, Kuai-Ku Hut, 2125 m, 27.IV.92. 1
9 (MHNG).
Discussion: Our identification of this female is reported as doubtful because of the
difficulties in distinguishing the species ofthe madurense group without examination
ofthe male copulatory organ.
Distribution: Taiwan.
132 FERNANDO ANGELINI & LUIGI DEMARZO
FlGS 11-16
Male copulatory organ (lateral view, dorsal and ventral view of apex) of: 11-13, Agathidium
alesin.sp.; 14-16,A.pictum n.sp. Scale: 1 division=0.1 mm.
SUPPLEMENTOFTHEAGATHIDIINI OFTAIWAN J33
Agathidium (Agathidium) familiare Ang. & Dmz.
Agathidium (s.str.)familiareAngelini & DeMarzo, 1995: 203.
Material: Taiwan, Kaohsiung Hsien, Kuanshan, trail at Kaunshanchi Riv., 2650 m,
21.IV.92, 1 3 and2 9 (MHNG); TaichungHsien, Anmashan, 2225 m, 1 1.V.92, 1 3 (MHNG);
Taichung Hsien, Anmashan, 2230 m, 12.V.92, 2 S and 1 9 (MHNG, AC); Taichung Hsien,
Anmashan, 2225 m, 14.V.92, 1 S and 1 9 (MHNG); Kaohsiung Hsien, Peinantashan trail,
2500m, 4.VII.93, 3 3 and4 9 (MHNG, AC); Kaohsiung Hsien, Peinantashan trail, 2390-2490
m, 5.VII.93, 3 3 and 8 9 (MHNG, NMNT); Kaohsiung Hsien, Kuanshan, trail at Kaunshanchi
Riv., 2400m, 20.VII.93, 1 3 and2 9 (MHNG, AC).
Distribution: Taiwan.
seminulum group
Agathidium (Agathidium) mequignoni Roubal
Agathidium (s.str.)mequignoniRoubal, 1911: 49;Hlisnikovsky1964: 221; Angelin 1995: 278.
Material: Taiwan,Taichung Hsien, Anmashan, 2150m, 13.V.92, 1 3 (AC).
Discussion: This specimen agrees in all characters with the type material from Cau-
casus.
Distribution: Caucasus, Turkey, North Iran, Kirgizstan, Siberia, Korea, Taiwan. New
record forTaiwan.
laevigatum group
Agathidium (Agathidium) honestum Ang. & Dmz. Fig. 20
Agathidium (s.str.)honestum Angelini & De Marzo, 1995: 208.
Material: Taiwan, Kaohsiung Hsien, Kuanshan, Kunanoshing Hut, 3020 m, 18.IV.92,
1 '3 (MHNG); Pingtung Hsien, Peitawhushan, Kuai-Ku Hut, 2130 m, 27.IV.92, 2 3 and 2 9
(MHNG, NMNT); Pingtung Hsien, Peitawhushan, Kuai-Ku Hut, 2125 m, 27.IV.92, 3 3 and 4
9 (MHNG, NMNT, AC); Pingtung Hsien, Peitawhushan, Kuai-Ku Hut, 2135 m, 30.IV.92, 3 S
and 1 9 (MHNG, AC); Kaohsiung Hsien, Peinantashan trail, ridge at 2800 m, 3.VII.93, 1 3
(AC); KaohsiungHsien, Peinantashan trail, 2500 m, 4.VII.93, 1 3 (MHNG); Kaohsiung Hsien,
Peinantashantrail, 2390-2490m, 5.VII.93, 2 3 (AC).
Discussion: Agathidium honestum Ang. & Dmz. was described on the basis of 3
males. The additional specimens agree in all characters with the types. Female tarsal
formula: 5-4-4. Spermathecaas in fig. 20. Body length: 2.6-2.9 mm.
Distribution: Taiwan.
Agathidium (Agathidium) lucidum Ang. & Dmz.
Agathidium (s.str.) lucidum Angelini & De Marzo, 1995: 208.
Material: Taiwan, Nantou Hsien, Nenkaoshan trail, Yuenhal Hut, 2350 m, 4.V.92, 1
3 and 2 9 (MHNG); Nantou Hsien, Nenkaoshan Tenchi Hut, 2900 m, 5.V.92, 3 3 and 1 9
(MHNG); Nantou Hsien, Nenkaoshan, 2.5 Km SWTenchi Hut, 2720 m, 6.V.92, 11 3 and6 9
(MHNG,NMNT, AC);HanHsien,Taipingshan, 1950m, 13.VII.93, 1 3 (MHNG).
Distribution: Taiwan.
134 FERNANDOANGELINI & LUIGI DEMARZO
Figs 17-22
Spermatheca of: 17, Agathidium subnitidum n.sp.; 18, A. delicatulum n.sp.; 19, A. alesi n.sp.;
20, A. honestum Ang. & Dmz.; 21, A. meifengense Ang. & Dmz.; 22, A. egregium Ang. &
Dmz. Scale: 1 division =0.1 mm.
Agathidium (Agathidium) tenebroides Ang. & Dmz.
Agathidium (s.str.) TenebroidesAngelini & De Marzo, 1995: 210.
Material: Taiwan, Kaohsiung Hsien, Kuanshan, Kunanoshing Hut, 3020 m, 18.IV.92,
1 S (MHNG); Kaohsiung Hsien, Kuanshan, trail at Kaunshanchi Riv., 2400 m, 20.IV.92, 2 S
and 1 9 (MHNG); KaohsiungHsien, Kuanshan, trail at Kaunshanchi Riv., 2650m, 21.IV.92, 4
S and 10 9 (MHNG, NMNT, AC); Kaohsiung Hsien, Kuanshan, trail above Kaunshanchi
Riv., 2550 m, 21.IV.92, 1 S (MHNG); Kaohsiung Hsien, Peinantashan trail, 2400 m, 4.VII.93,
1 6 (AC); Kaohsiung Hsien, Peinantashan trail, 2500 m, 4.VII.93, 2 S and 3 9 (MHNG);
Kaohsiung Hsien, Peinantashan trail, 2390-2490 m, 5.VII.93, 9 cî and 6 9 (MHNG, NMNT,
AC); Kaohsiung Hsien, Peinantashan trail, 2080 m, 6.VII.93, 1 cî and 1 9 (MHNG); Kaoh-
siung Hsien, Peinantashan trail, 2020 m, 7.VII.93. 2 S (MHNG); Kaohsiung Hsien, Kuanshan,
trail at Kaunshanchi Riv., 2400 m, 20.VII.93, 1 S (MHNG); Kaohsiung Hsien, Kuanshan, trail
above Kaunshanchi Riv., 2550m, 22.VII.93, 3 6 (MHNG).
Distribution: Taiwan.
Agathidium (Agathidium) meifengense Ang. & Dmz. Fig. 21
Agathidium (s.str.)meifengense Angelini & De Marzo, 1995: 213.
Material: Taiwan, Taichung Hsien, Anmashan, creek, 2185 m, 12.V.92, 1 cî and 2 9
(MHNG, NMNT); Taichung Hsien, Anmashan, 2230 m. 12.V.92, 3 6 and4 9 (MHNG, AC);
Taichung Hsien, Anmashan, 2120m, 13.V.92, 1 cî (MHNG).
